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AA-2008.0011                  AUSCERT Advisory

                             [Win][UNIX/Linux]
                Multiple Vulnerabilities in Horde Products
                              17 January 2008
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        AusCERT Advisory Summary
        ------------------------

Product:              IMP Webmail Client 4.1.5
                      Horde Application Framework 3.1.5
                      Horde Groupware Webmail Edition 1.0.3
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Delete Arbitrary Files
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-6018
Member content until: Thursday, February 14 2008

OVERVIEW:

        Multiple vulnerabilities have been reported in Horde products that
        can lead to the deletion and purging of email messages.


IMPACT:

        The National Vulnerability Database [1], gives the following
        information regarding these vulnerabilities:

        o CVE-2007-6018: "IMP Webmail Client 4.1.5, Horde Application 
          Framework 3.1.5, and Horde Groupware Webmail Edition 1.0.3 does 
          not validate unspecified HTTP requests, which allows remote 
          attackers to (1) delete arbitrary e-mail messages via a modified 
          numeric ID or (2) "purge" deleted emails via a crafted email 
          message." [2]
        

MITIGATION:

        Horde have addressed these issues with the release of Horde
        Groupware Webmail 1.0.4 [3] and Horde Application Framework 3.1.6
        [4]. IMP Webmail Client 4.1.6 has also been released [5] but in 
        order to fix the vulnerability you must have the latest Horde 
        Application Framework installed.


REFERENCES:

        [1] National Vulnerability Database
            http://nvd.nist.gov/

        [2] National Vulnerability Database (CVE-2007-6018)
            http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-6018

        [3] Horde Groupware Webmail 1.0.4 (Download Link)
            http://ftp.horde.org/pub/horde-webmail/horde-webmail-1.0.4.tar.gz

        [4] Horde Application Framework 3.1.6 (Download Link)
            ftp://ftp.horde.org/pub/horde/horde-3.1.6.tar.gz

        [5] Horde IMP Webmail Client 4.1.6 (Download Link)
            ftp://ftp.horde.org/pub/imp/imp-h3-4.1.6.tar.gz
          

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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